20999956320

素因数分解:

$2^5\times 3^4\times 5^1\times 7^1\times {\mathrm{231481}}^1$

素因数の和:231515

約数の個数: 240

約数和(自身を含む): 84700189728

約数和(自身を除く): 63700233408

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 81, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 162, 168, 180, 189, 210, 216, 224, 240, 252, 270, 280, 288, 315, 324, 336, 360, 378, 405, 420, 432, 480, 504, 540, 560, 567, 630, 648, 672, 720, 756, 810, 840, 864, 945, 1008, 1080, 1120, 1134, 1260, 1296, 1440, 1512, 1620, 1680, 1890, 2016, 2160, 2268, 2520, 2592, 2835, 3024, 3240, 3360, 3780, 4320, 4536, 5040, 5670, 6048, 6480, 7560, 9072, 10080, 11340, 12960, 15120, 18144, 22680, 30240, 45360, 90720, 231481, 462962, 694443, 925924, 1157405, 1388886, 1620367, 1851848, 2083329, 2314810, 2777772, 3240734, 3472215, 3703696, 4166658, 4629620, 4861101, 5555544, 6249987, 6481468, 6944430, 7407392, 8101835, 8333316, 9259240, 9722202, 10416645, 11111088, 12499974, 12962936, 13888860, 14583303, 16203670, 16666632, 18518480, 18749961, 19444404, 20833290, 22222176, 24305505, 24999948, 25925872, 27777720, 29166606, 31249935, 32407340, 33333264, 37036960, 37499922, 38888808, 41666580, 43749909, 48611010, 49999896, 51851744, 55555440, 58333212, 62499870, 64814680, 66666528, 72916515, 74999844, 77777616, 83333160, 87499818, 93749805, 97222020, 99999792, 111110880, 116666424, 124999740, 129629360, 131249727, 145833030, 149999688, 155555232, 166666320, 174999636, 187499610, 194444040, 199999584, 218749545, 233332848, 249999480, 259258720, 262499454, 291666060, 299999376, 333332640, 349999272, 374999220, 388888080, 437499090, 466665696, 499998960, 524998908, 583332120, 599998752, 656248635, 699998544, 749998440, 777776160, 874998180, 999997920, 1049997816, 1166664240, 1312497270, 1399997088, 1499996880, 1749996360, 2099995632, 2333328480, 2624994540, 2999993760, 3499992720, 4199991264, 5249989080, 6999985440, 10499978160, 20999956320]

約数ペア:

[(1, 20999956320), (2, 10499978160), (3, 6999985440), (4, 5249989080), (5, 4199991264), (6, 3499992720), (7, 2999993760), (8, 2624994540), (9, 2333328480), (10, 2099995632), (12, 1749996360), (14, 1499996880), (15, 1399997088), (16, 1312497270), (18, 1166664240), (20, 1049997816), (21, 999997920), (24, 874998180), (27, 777776160), (28, 749998440), (30, 699998544), (32, 656248635), (35, 599998752), (36, 583332120), (40, 524998908), (42, 499998960), (45, 466665696), (48, 437499090), (54, 388888080), (56, 374999220), (60, 349999272), (63, 333332640), (70, 299999376), (72, 291666060), (80, 262499454), (81, 259258720), (84, 249999480), (90, 233332848), (96, 218749545), (105, 199999584), (108, 194444040), (112, 187499610), (120, 174999636), (126, 166666320), (135, 155555232), (140, 149999688), (144, 145833030), (160, 131249727), (162, 129629360), (168, 124999740), (180, 116666424), (189, 111110880), (210, 99999792), (216, 97222020), (224, 93749805), (240, 87499818), (252, 83333160), (270, 77777616), (280, 74999844), (288, 72916515), (315, 66666528), (324, 64814680), (336, 62499870), (360, 58333212), (378, 55555440), (405, 51851744), (420, 49999896), (432, 48611010), (480, 43749909), (504, 41666580), (540, 38888808), (560, 37499922), (567, 37036960), (630, 33333264), (648, 32407340), (672, 31249935), (720, 29166606), (756, 27777720), (810, 25925872), (840, 24999948), (864, 24305505), (945, 22222176), (1008, 20833290), (1080, 19444404), (1120, 18749961), (1134, 18518480), (1260, 16666632), (1296, 16203670), (1440, 14583303), (1512, 13888860), (1620, 12962936), (1680, 12499974), (1890, 11111088), (2016, 10416645), (2160, 9722202), (2268, 9259240), (2520, 8333316), (2592, 8101835), (2835, 7407392), (3024, 6944430), (3240, 6481468), (3360, 6249987), (3780, 5555544), (4320, 4861101), (4536, 4629620), (5040, 4166658), (5670, 3703696), (6048, 3472215), (6480, 3240734), (7560, 2777772), (9072, 2314810), (10080, 2083329), (11340, 1851848), (12960, 1620367), (15120, 1388886), (18144, 1157405), (22680, 925924), (30240, 694443), (45360, 462962), (90720, 231481)]